To copy trading signals from one Meta Trader 4 account to another you must know the password (investor or trader) to login to this account.

Then you start two Meta Trader 4 terminals, one terminal (Signal provider) should be connected to the account you want to copy (Meta Trader 1), another should be connected to your account (Meta Trader). On the first terminal you start "Signal provider" expert adviser (EA) that will be tracking all changes on the copied account. On the second terminal you start "Signal processor" EA that will receive signals generated with "Signal provider" EA and copy them to your account.

In case if you want to copy more than 1 account you should start more than one MT4 terminals with "Signal provider" EA every connected to its account.

Important! On each Meta Trader 4 terminal must be only one! EA "Signal processor" or "Signal provider". Do not place these experts on every chart.